What is the difference between LES and LDS instructions-00847
This subjective question is related to the book/course
vu cs507 Information Systems.
It can also be found in
vu cs507 Mid Term Solved Past Paper No. 3.
Question 1: What is the difference between LES and LDS instructions ?
Answer:
The string instructions need source and destination in the form of a segment offset pair. LES and LDS load a segment register and a general purpose register from two consecutive memory locations. LES loads ES while LDS loads DS. Both instructions has two parameters, one is the general purpose register to be loaded and the other is the memory location from which to load these registers. The major application of these instructions is when a subroutine receives a segment offset pair as an argument and the pair is to be loaded in a segment and an offset register.
